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    Interface TreeWalker

    The TreeWalker object represents the nodes of a document subtree and a position within them.

    MDN Reference

    interface TreeWalker {
        currentNode: Node;
        filter: NodeFilter | null;
        root: Node;
        whatToShow: number;
        firstChild(): Node | null;
        lastChild(): Node | null;
        nextNode(): Node | null;
        nextSibling(): Node | null;
        parentNode(): Node | null;
        previousNode(): Node | null;
        previousSibling(): Node | null;
    }
    Index

    Properties

    currentNode filter root whatToShow

    Methods

    firstChild lastChild nextNode nextSibling parentNode previousNode previousSibling

    Properties

    currentNode: Node

    The TreeWalker.currentNode property represents the A Node.

    MDN Reference

    filter: NodeFilter | null

    The TreeWalker.filter read-only property returns the NodeFilter associated with the TreeWalker.

    MDN Reference

    root: Node

    The TreeWalker.root read-only property returns the root Node that the TreeWalker traverses.

    MDN Reference

    whatToShow: number

    The TreeWalker.whatToShow read-only property returns a bitmask that indicates the types of nodes to show.

    MDN Reference

    Methods

    • The TreeWalker.firstChild() method moves the current the found child.

      MDN Reference

      Returns Node | null

    • The TreeWalker.lastChild() method moves the current the found child.

      MDN Reference

      Returns Node | null

    • The TreeWalker.nextNode() method moves the current the found node.

      MDN Reference

      Returns Node | null

    • The TreeWalker.nextSibling() method moves the current is no such node, it returns null and the current node is not changed.

      MDN Reference

      Returns Node | null

    • The TreeWalker.parentNode() method moves the current and returns the found node.

      MDN Reference

      Returns Node | null

    • The TreeWalker.previousNode() method moves the current returns the found node.

      MDN Reference

      Returns Node | null

    • The TreeWalker.previousSibling() method moves the current there is no such node, it returns null and the current node is not changed.

      MDN Reference

      Returns Node | null

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